Season 1
Season 1, Episode 1: Rising
Original Air Date: 16 July 2004
A team of scientists think they have found the location of the long lost city of Atlantis. It can be reached by a stargate that leads to another galaxy.

Season 1, Episode 2: Hide and Seek
Original Air Date: 23 July 2004
Rodney can't get rid of a device that makes him invincible, disabling him to drink or eat. Meanwhile power malfunctions and one of the Athosians mentions seeing a shadow.

Season 1, Episode 3: Thirty Eight Minutes
Original Air Date: 30 July 2004
Sheppard gets bitten by a wraith-like bug and is dying. While the puddle jumper returns it gets stuck in the Stargate. There's 38 minutes for a solution.

Season 1, Episode 4: Suspicion
Original Air Date: 6 August 2004
There's suspicion of a Wraith collaborator and some of the team suspect the Athosians. Ford and Sheppard find land on Atlantis' planet.

Season 1, Episode 5: Childhood's End
Original Air Date: 13 August 2004
Rodney investigates a ZPM from a planet whose inhabitants kill themselves when they turned 25 years old to prevent the Wraiths from finding them profitable.

Season 1, Episode 6: Poisoning the Well
Original Air Date: 20 August 2004
Atlantis offers help to the Hoffans, who are working on a cure against the Wraith.

Season 1, Episode 7: Underground
Original Air Date: 27 August 2004
Atlantis wants to trade food with the Genii, a simple civilization who turn out to be not so simple. They are planning a nuclear attack against the Wraith.

Season 1, Episode 8: Home
Original Air Date: 10 September 2004
A strange energy generating fog allows travel back to Earth. But something's wrong.

Season 1, Episode 9: The Storm
Original Air Date: 17 September 2004
Two hurricanes are approaching Atlantis and an evacuation is necessary. The leader of the planet taking them in tells the Genii about the situation.

Season 1, Episode 10: The Eye
Original Air Date: 8 November 2004
McKay and Weir start repairing the grounding station, while Sheppard tries to fight Kolya. The puddle jumper on the mainland enters the eye of the storm.

Season 1, Episode 11: The Defiant One
Original Air Date: 15 November 2004
Major John Sheppard, Rodney McKay and two scientists explore a planet where a Wraith spaceship, which fell there 10,000 years ago, during the Atlantis-Wraith War, is still sending a SOS signal.

Season 1, Episode 12: Hot Zone
Original Air Date: 22 November 2004
A team of scientists, including McKay, Zelenka and Ford, are exposed to a deadly virus. Sheppard goes after one of the scientists trying to escape.

Season 1, Episode 13: Sanctuary
Original Air Date: 29 November 2004
Sheppard invites a priestess, who claims to not know about a weapon protecting her planet from the Wraith, to Atlantis to discuss asylum for refugees.

Season 1, Episode 14: Before I Sleep
Original Air Date: 6 December 2004
It's Elizabeth's birthday and she gets a very special gift: a woman who has been in stasis in an Atlantis' laboratory for 10,000 years and is actually herself.

Season 1, Episode 15: The Brotherhood
Original Air Date: 3 January 2005
The team is on Dagan, where they must find key stones to retrieve a ZPM. Zelenka finds out Atlantis has a deep space scanner.

Season 1, Episode 16: Letters from Pegasus
Original Air Date: 10 January 2005
McKay finds a way to send a message to Earth, leaving space for personal messages. Sheppard and Teyla are off to spy on the Wraith fleet approaching Atlantis.

Season 1, Episode 17: The Gift
Original Air Date: 17 January 2005
Teyla is haunted by nightmares, leaving her agitated. After seeing a psychologist, an old Athosian woman tells her a secret about her ability to sense the Wraith.

Season 1, Episode 18: The Siege: Part 1
Original Air Date: 24 January 2005
McKay and Zelenka come up with the idea to repair the Ancients' weapon satellite. Bates and Teyla get into a fight, he is found unconscious a while later.

Season 1, Episode 19: The Siege: Part 2
Original Air Date: 31 January 2005
All hope seems lost, until Colonel Everett arrives suddenly from Earth. He is determined to defend the city until the arrival of a ZPM, brought by a new ship.